Home / 3,830.32-5,286.06-2,151.86

Finding the Fourth Proportional to 3,830.32, 5,286.06 and 2,151.86

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Solution

The fourth proportional to 3,830.32, 5,286.06 and 2,151.86 is: 2,969.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,830.32 : 5,286.06 = 2,151.86 : x
  2. Step 2: Convert to fraction form
    3,830.32/5,286.06 = 2,151.86/x
  3. Step 3: Cross multiply
    3,830.32x = 5,286.06 × 2,151.86
  4. Step 4: Simplify right side
    3,830.32x = 11,374,861.07
  5. Step 5: Solve for x
    x = 11,374,861.07/3,830.32
  6. Step 6: Final answer
    x = 2,969.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.